Contradiction with Numbers 35:2
This verse explains that Moses was commanded to allocate 48 cities to the Levites, differing from the specific cities in 1 Chronicles 6:61.
Numbers 35:2: Command the children of Israel, that they give unto the Levites of the inheritance of their possession cities to dwell in; and ye shall give [also] unto the Levites suburbs for the cities round about them.
Contradiction with Joshua 21:5
This verse lists cities assigned to the Kohathites which might not align with the specifics noted in 1 Chronicles 6:61 regarding the allotment to the tribes.
Joshua 21:5: And the rest of the children of Kohath [had] by lot out of the families of the tribe of Ephraim, and out of the tribe of Dan, and out of the half tribe of Manasseh, ten cities.